skuzzy is correct.. my cousin had a 66 ford gallaxie with a 425hp dual four side oiler 427 and four speed factory fiberglass hood... probly save 200 lbs on that boat.
guys... we are getting off base here.. notice the "original" 1/4 mile times in the articles? those on f70 polyglass tires and those on slicks? the slicks were about as sticky back then as your standard wall mart radial with the pressure adjusted to 20lbs. Any of those old muscle cars will knock on the 12's with good modern tires.. better intakes, cams and exhaust make it simple to knock onb the 11's And... that is with modern gas and low compression.. the old muscle cars ran 11 to 1 or more.
As for "turner" versions kicking the poor ol elkies butt... maybe but... I could get the elky into the 10's with a few bucks and still be about 1/3 or less of the cost of the tuner. Many cirrent street muscle cars will run in the low 10's high nines.
Brakes, suspension gearboxes are all better now but... new cars are well sorted out. It's hard to compete and not have a car that is full of comprimise... rough ride, noise... no fuel economy but... We can compete... we can compete straight line or around corners or stopping... a baer braked chevelle will stop 0-6- in 100 feet... 3700 lb chevelles will pull allmost 1 g around corners with the right parts.
but why bother? you bleed and get towed and pour money in before you get it sorted out.... even then... you have something that is at best a comprimise... not really all that practical. You could buy things right off the showroom floor that work allmost as well. Maybe even better if you are willing to spend 200,000 bucks or more. I guess... Buy it or build it is the choice.
lazs